Jonathan j



(No Model.)

J'. J. HOYT.

CASE POR PRESERVING P001). No. 313,076. Patented Mar. 3, 1885.

Wat @sSQL-1 N. PETERS Plwm-Lnlwumpher. washingm". D C.

Unirse Sterns Partnr VOri-ron JONATHAN J. HOYT, OF OHELMSFORD,MASSACHUSETTS, ASSIGNOR TO EDVARD F. RICHARDSON, OF SAME PLACE.

CASE FOR PRESERVING FOOD.

Application filed July l5, 18512.

Be it known that I, JONATHAN J. HoY'r, of Chelmsford, in the county ofMiddlesex and Commonwealth of Massachusetts, have invented certain newand useful Improvements in Cases icrPrescrving Food, ot' which thefollowing is a specilication. y

My invention rela-tes to such cases as are provided with externalscrew-threads to engage sheet-metal sleeve-nuts which hold the covers otsuch cases in place; and it consists in means for strengthening suolinuts` at the sides and tops thereof.

In the accompanying drawings, Figure l is a side elevation ot' such aease and sleeve-nut with my improvement applied thereto; Fig. :i planofthe same; Fig. 3, a central vertical suiion of the ease, cover, andsleevenut.

A is a cylindrical ease provided near its top with an external screw,IS. rlhis case may be like the fruit-jars commonly used. The opening inthe top ot' the case is closed by a circular cover, O. between which andthe ease may be interposed a gasket or packing,O. All of these parts maybe of known construction and are not of my invention. The sleeve-nut D,stamped out ot'sheetnietal, and having ascreivthread (to engage with thethread B on the case A.) and having an internal iiange, D@ which restsupon the top of the cover O, is ot' the usual construction. except thatit is strengthened and stiffened by three or more vertical stays, D?,which arc soldered to the sides and top of said nut. These stays arepreferably made of round wire, which is bent at about a right angle, soas to stand vertically on the side and radially on the top of saidsleevenut. The inner side of the vertical part of the stay may benotched to fit the external threads ol" the nut, as shown at d, Figs.

ECIFICATION forming part of Letters Patent No. 313,076, dated March 3,1885.

(No model.)

flange is so stiffened that a greater pressure y can be brought ou thecover. It is common to form the sleeve-nut in one piece With the cover.

I am aware that a single vertical Wire has been soldered to the side ofa sleeve-nut or cover to engage with a wrench, by which such nut orcover is screwed on, but as the strength' of the vertical part of thenut or cover is only as great as the strength of its Weakest part, sucha single vertical rib has practically no effect to strengthen the cover.

I am also aware that cast-metal screw-covers have been made withvertical ribs to enable such covers to be more rmly grasped by the hand.

I claim as my inventionw 1. The combination ofthe sheet-metal sleevenutD. and three or more vertical stays, D2, secured to the outside ot' saidnut, as and for the purpose specified.

2. rIhe combination ofthe sheet-metal sleevenut D, provided with aninternal flange, D', and three or more vertical stays, D, secured to theoutside of said nut and to the top of said flange, as and for thepurpose specified.

JON A. J. HOYT.

VVitnes'ses:

ALBERT M. MOORE, KIRKLEY HYDE.

